#pragma once
#include <iostream>
#include <string>
#include <sys/types.h>
#include <sys/socket.h>
#include "Log.hpp"
#include "Common.hpp"
#include "InetAddr.hpp"

namespace SocketModule
{
    int gdefaultsockfd = -1;
    using namespace LogModule;
    // 模版方法模式
    class Socket
    {
    public:
        virtual ~Socket() = default;
        virtual void SocketorDie() = 0;
        virtual void SetSocketOpt() = 0;
        virtual bool BindOrDie(int port) = 0;
        virtual bool ListenOrDie() = 0;
        virtual int Accepter(InetAddr *client) = 0;
        virtual void Close() = 0;
        virtual int Recv(std::string *out) = 0;
        virtual int Send(const std::string &in) = 0;
        virtual int Fd() = 0;
        void BiultTcpSocketMethod(int port)
        {
            SocketorDie();
            SetSocketOpt();
            BindOrDie(port);
            ListenOrDie();
        }
    };
    class TcpSocket : public Socket
    {
    public:
        TcpSocket():_sockfd(gdefaultsockfd)
        {

        }
        TcpSocket(int sockfd) : _sockfd(sockfd)
        {
        }
        virtual void SocketorDie() override
        {
            _sockfd = ::socket(AF_INET,SOCK_STREAM,0);
            if(_sockfd < 0)
            {
                LOG(LogLevel::ERROR) << "Socket error";
                exit(SOCKET_ERR);
            }
            LOG(LogLevel::DEBUG) << "socket create success: " << _sockfd;
        }
        virtual void SetSocketOpt() override
        {
            int opt = 1;
            int n = ::setsockopt(_sockfd,SOL_SOCKET,SO_REUSEADDR,&opt,sizeof(opt));
            (void)n;
        }
        virtual bool BindOrDie(int port) override
        {
            if(_sockfd == gdefaultsockfd) 
                return false;
            InetAddr Server(port);
            int n = ::bind(_sockfd,Server.NetAddr(),Server.NetAddrLen());
            if (n < 0)
            {
                LOG(LogLevel::ERROR) << "bind error";
                exit(SOCKET_ERR);
            }
            LOG(LogLevel::DEBUG) << "bind create success: " << _sockfd;
            return true;
        }
        virtual bool ListenOrDie() override
        {
            if (_sockfd == gdefaultsockfd)
                return false;
            int n = ::listen(_sockfd,gbacklog);
            if (n < 0)
            {
                LOG(LogLevel::ERROR) << "listen error";
                exit(LISTEN_ERR);
            }
            LOG(LogLevel::DEBUG) << "listen create success: " << _sockfd;
            return true;
        }
        virtual int Accepter(InetAddr *client) override
        {
            struct sockaddr_in peer;
            socklen_t len = sizeof(peer);
            int newsockfd = ::accept(_sockfd,CONV(&peer),&len);
            if (newsockfd < 0)
            {
                LOG(LogLevel::WARNING) << "accept error";
                return -1;
            }
            client->SetAddr(peer,len);
            return newsockfd;
        }
        virtual void Close() override
        {
            if (_sockfd == gdefaultsockfd)
            return;
            ::close(_sockfd);
        }
        virtual int Recv(std::string *out) override
        {
            char buffer[1024];
            ssize_t size = ::recv(_sockfd,buffer,sizeof(buffer) - 1,0);
            if (size > 0)
            {
                buffer[size] = 0;
                *out = buffer;
            }
            return size;
        }
        virtual int Send(const std::string &in) override
        {
            ssize_t size = ::send(_sockfd, in.c_str(), in.size(), 0);
            return size;
        }
        virtual int Fd() override
        {
            return _sockfd;
        }
        virtual ~TcpSocket()
        {}
    private:
        int _sockfd;
    };
}